{Reference Type}: Letter {Title}: Retrieval of malpositioned Atrial Septal Occluder (ASO) devices: call for guidelines. {Author}: Varadharajan R;Parida S;Badhe A; {Journal}: Pediatr Cardiol {Volume}: 36 {Issue}: 4 {Year}: Apr 2015 {Factor}: 1.838 {DOI}: 10.1007/s00246-015-1124-6 {Abstract}: